Battery clamp



FIG. 1 is a front perspective view showing the new design for a battery clamp;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is another side view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown represent portions of the battery clamp that form no part of the claimed design. 

CLAIM The ornamental design for a battery clamp, as shown and described. 